Knife-cylinder.



W. STANAT. KNIFE CYLINDER. APPLICATION FILED JAN. 1a, 1913.

Patented Oct. 28, 1913.

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COLUMBIA PLANDGRAPH c0.. WASHINGTON. u. c.

WILLIAM STANAT, 0F CLEAR LAKE, WISCONSIN.

KNIFE-CYLINDER.

Specification of Letters Patent.

Application filed January 13, 1913. Serial No. 741,873.

To all whom it may concern Be it known that 1, WILLIAM STANATffl citizen of the United States, resident of Clear Lake, Polk county, Wisconsin, have invented certain new and useful Improvements in Knife-Cylinders, of which the f0llowing is a specification.

My invention relates to knife cylinders and particularly to those used for cutting material such as ensilage.

The object of my invention is to provide a cylinder having knife seats therein which will allow the convenient adjustment of the knives or the removal of a knife entirely from the cylinder without disturbing the other knives.

The invention consists generally in various constructions and combinations all as hereinafter described and particularly pointed out in the claim.

In the accompanying drawings forming part of this specification, Figure 1 is a vertical sectional view through a knife cylinder and the feeding apparatus therefor, Fig. 2 is a plan view of the knife cylinder, Fig. 3 is a detail sectional view, showing the means for adjusting a knife in its seat and in the cylinder, Fig. 4f is a sectional view on the line 0c-m of Figure 3.

Tn the drawing, 2 represents a suitable frame, 8 a carrier belt and 4- and 5-5 pairs of feed rolls between which the material is fed to the cylinder.

6 is a shaft, journaled in hearings in the frame of the machine and driven fro-m a suitable source of power. Upon the shaft 6 the heads of the cylinder are keyed. These heads consist preferably of a hub 7, a series of spokes 8, and rims 9, all cast in one piece, and at suitable intervals the rims are provided with peripheral recesses 10.

etween these recesses the rims are provided with tangentially arranged seats or sockets 11, extending partially through the rims,-1: referably, and adapted to receive the ends of knife blades 12, which are diagonally mounted in the said sockets and provided with beveled cutting edges 13.

As shown in Fig. 2, the cutting edges of the knives are at an angle to the axis of the cylinder. This is preferably effected by arranging the seats or sockets in the opposite heads in staggered relation to one another and fitting the ends of the blades in the sockets to slide transversely therein, with their cutting edges arranged to make a sheer out as they sweep past a stationary knife 14: mounted in the frame of the machine.

The knife blades are curved transversely to fitthe curvature of the seats and conform to the peripheries of the heads and follow the curvature of the outer faces of the rims in the adjustment of the knife blades with respect to the stationary plate. .lfiach socket in the cylinder heads has an outer and an inner bearing surface, the inner surface, due to the curvature of the head, being of greater area than the outer surface, and both surfaces present broad bearings for the ends of the knife blades and cooperate with the securing means to prevent the blades from working loose in the operation of the cylinder.

Each knife blade is preferably locked on its seat by a set screw 14: having a jam nut 15, and mounted in the inner portion of the rim and engaging the inner face of the blade to clamp it securely in its seat. The engagement oft-he set screws with the knife blade forces the blade outwardly against the outer wall of the socket which, as stated above, has a broad frictional surface to meet the surface of the blade and prevent it from slipping or working loose. Outward movement of the blades is effected by means of adjusting screws 16 mounted in the walls of the rims at one end of the recesses 10 and secured by means of jam nuts 17. By loosening the screws 14 any one of the blades may be removed from the cylinder without disturbing the other blades and by means of the screw 16 any blade can be adjusted at one or both ends, as desired. As the clamping screws do not enter the blades, but merely contact therewith, T am able to adjust the blades ec gewise and clamp them at any point within the range of their edgewise adjustment. I am thus able to easily and quickly adjust the blades to compensate for wear of their cutting edges.

I have found that the broad bearing surfaces for the blades in the heads of the cylinder form a substantial backing or support for the blades and insure the locking of the blades by means of the clamping screws and positively prevent their working loose in the operation of the cylinder.

I claim as my invention A knife cylinder provided with a headat each end thereof, each head having a series of peripheral recesses at lntervals therein, the walls of sald heads between said recesses Patented Oct. 28, 1913.

having peripheral sockets extending tangentially therein and each provided with a rear wall forming the wall of the adjacent recess and inner and outer walls, knife blades extending from end to end of said cylinder and fitting edgewise within said sockets and braced and supported on both sides by the walls of said sockets, clamping screws mounted in one wall of said sockets and contacting with said blades to clamp them against the opposite wall of said sockets,- adjusting screws mounted in the rear walls of said sockets and accessible through said A. J. MoLnNNA-N, W. R'. INGALLS.

Copies of this'pa/cent may be obtained m five cents each, by addressing" the "Commissioner of Patents,

Washington, D. 0. 

